GLCD module inline assembler explanation wanted

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GLCD module inline assembler explanation wanted

Post by atlantis » Mon Mar 01, 2010 10:01 am

I had a long hard look at the GLCD module and got stuck in the Graphics.bas file where there is inline assembler for the font table lookups. Being no assembler programmer I am having some difficulties understanding what's going on.

I see that the sequence

Code: Select all

      TBLRD *+ 
      movff TABLAT, Result
does read from the font table and moves the read byte into the result register. But can somebody tell me in what register the address of the (currently used) font table is stored and where and how this is set in the module code?


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